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CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
13:47:25
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combine-tags-by-or
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2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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Problems
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Status
Standings
Custom test
Problems
#
Name
1891C
Smilo and Monsters
binary search
,
constructive algorithms
,
greedy
,
sortings
,
two pointers
1500
x13612
1889F
Doremy's Average Tree
data structures
,
dp
,
greedy
,
trees
3500
x82
1889E
Doremy's Swapping Trees
dfs and similar
,
graphs
,
trees
3500
x112
1889D
Game of Stacks
brute force
,
dfs and similar
,
graphs
,
implementation
,
trees
3000
x625
1889C2
Doremy's Drying Plan (Hard Version)
data structures
,
dp
2600
x1023
1889C1
Doremy's Drying Plan (Easy Version)
brute force
,
data structures
,
dp
,
greedy
,
sortings
2000
x3341
1889B
Doremy's Connecting Plan
constructive algorithms
,
greedy
,
math
,
sortings
1700
x7479
1887F
Minimum Segments
constructive algorithms
3400
x175
1887E
Good Colorings
binary search
,
constructive algorithms
,
graphs
,
interactive
3100
x385
1887D
Split
binary search
,
data structures
,
divide and conquer
,
dsu
,
math
,
trees
,
two pointers
2700
x983
1887C
Minimum Array
binary search
,
brute force
,
constructive algorithms
,
data structures
,
greedy
,
hashing
,
two pointers
2400
x1782
1887B
Time Travel
binary search
,
graphs
,
shortest paths
1900
x3074
1886F
Diamond Theft
data structures
,
greedy
3300
x192
1886E
I Wanna be the Team Leader
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
math
,
sortings
,
two pointers
2400
x1504
1886D
Monocarp and the Set
combinatorics
,
data structures
,
math
2100
x3633
1886C
Decreasing String
implementation
,
strings
1600
x11729
1884E
Hard Design
greedy
,
implementation
,
math
2800
x322
1884D
Counting Rhyme
dp
,
math
,
number theory
2100
x3294
1884C
Medium Design
brute force
,
data structures
,
dp
,
greedy
,
sortings
1700
x6200
1883G2
Dances (Hard Version)
binary search
,
greedy
,
sortings
,
two pointers
1900
x5479
1883G1
Dances (Easy version)
binary search
,
greedy
,
two pointers
1400
x11356
1883F
You Are So Beautiful
data structures
1400
x9698
1883E
Look Back
bitmasks
,
greedy
1700
x8239
1883D
In Love
data structures
,
greedy
1500
x11716
1882E2
Two Permutations (Hard Version)
constructive algorithms
3100
x299
1882E1
Two Permutations (Easy Version)
brute force
,
constructive algorithms
,
greedy
,
number theory
2400
x1037
1882D
Tree XOR
bitmasks
,
dfs and similar
,
dp
,
greedy
,
trees
1900
x5594
1882C
Card Game
brute force
,
greedy
1500
x12533
1881G
Anya and the Mysterious String
binary search
,
data structures
2000
x2422
1881F
Minimum Maximum Distance
dfs and similar
,
dp
,
graphs
,
shortest paths
,
trees
1700
x7118
1881E
Block Sequence
dp
1500
x14677
1879F
Last Man Standing
brute force
,
data structures
,
number theory
2800
x516
1879E
Interactive Game with Coloring
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
implementation
,
interactive
,
trees
2400
x1277
1879D
Sum of XOR Functions
bitmasks
,
combinatorics
,
divide and conquer
,
dp
,
math
1700
x7571
1878G
wxhtzdy ORO Tree
binary search
,
bitmasks
,
brute force
,
data structures
,
dfs and similar
,
implementation
,
trees
2300
x1202
1878F
Vasilije Loves Number Theory
brute force
,
math
,
number theory
1900
x4172
1878E
Iva & Pav
binary search
,
bitmasks
,
data structures
,
greedy
1400
x13182
1878D
Reverse Madness
data structures
,
greedy
1600
x8500
1876G
Clubstep
binary search
,
brute force
,
data structures
,
greedy
,
trees
3500
x141
1876F
Indefinite Clownfish
binary search
,
graphs
3500
x143
1876E
Ball-Stackable
constructive algorithms
,
data structures
,
dp
,
trees
3300
x272
1876D
Lexichromatography
combinatorics
,
dfs and similar
,
dsu
,
graphs
,
two pointers
2500
x892
1876C
Autosynthesis
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
sortings
2100
x2326
1876B
Effects of Anti Pimples
combinatorics
,
number theory
,
sortings
1500
x8447
1875D
Jellyfish and Mex
dp
1600
x8898
1875C
Jellyfish and Green Apple
bitmasks
,
greedy
,
math
,
number theory
1400
x11907
1874G
Jellyfish and Inscryption
dp
3500
x88
1874F
Jellyfish and OEIS
dp
3500
x217
1874E
Jellyfish and Hack
dp
,
math
3000
x322
1874D
Jellyfish and Miku
divide and conquer
,
dp
,
math
,
probabilities
2800
x743
1874C
Jellyfish and EVA
dp
,
graphs
,
greedy
,
math
,
probabilities
2300
x1746
1874B
Jellyfish and Math
bitmasks
,
brute force
,
dfs and similar
,
dp
,
graphs
,
shortest paths
2400
x1161
1873H
Mad City
dfs and similar
,
dsu
,
games
,
graphs
,
shortest paths
,
trees
1700
x7564
1873G
ABBC or BACB
constructive algorithms
,
greedy
1500
x13589
1872G
Replace With Product
brute force
,
greedy
,
math
2000
x4347
1872F
Selling a Menagerie
dfs and similar
,
dsu
,
graphs
,
implementation
,
math
1800
x6450
1872E
Data Structures Fan
binary search
,
bitmasks
,
data structures
,
dp
1500
x13994
1870H
Standard Graph Problem
data structures
,
graphs
,
greedy
,
trees
3500
x87
1870G
MEXanization
data structures
3300
x219
1870F
Lazy Numbers
binary search
,
math
2900
x496
1870E
Another MEX Problem
bitmasks
,
brute force
,
dp
,
shortest paths
2300
x2409
1870D
Prefix Purchase
greedy
,
implementation
,
sortings
1800
x7089
1868F
LIS?
data structures
,
greedy
,
implementation
3500
x78
1868E
Min-Sum-Max
constructive algorithms
,
dp
,
greedy
3500
x86
1868D
Flower-like Pseudotree
constructive algorithms
,
graphs
,
greedy
,
implementation
,
trees
3000
x290
1868C
Travel Plan
combinatorics
,
dp
,
implementation
,
math
,
trees
2400
x1177
1868B2
Candy Party (Hard Version)
bitmasks
,
constructive algorithms
,
dp
,
greedy
,
implementation
,
math
2100
x2437
1868B1
Candy Party (Easy Version)
bitmasks
,
constructive algorithms
,
graphs
,
greedy
,
implementation
,
math
1700
x7096
1867F
Most Different Tree
brute force
,
constructive algorithms
,
dfs and similar
,
greedy
,
hashing
2700
x425
1867E2
Salyg1n and Array (hard version)
constructive algorithms
,
interactive
2200
x3223
1867E1
Salyg1n and Array (simple version)
constructive algorithms
,
interactive
,
math
2000
x3805
1867D
Cyclic Operations
brute force
,
constructive algorithms
,
dfs and similar
,
graphs
,
greedy
,
implementation
1800
x5873
1866M
Mighty Rock Tower
brute force
,
combinatorics
,
dp
,
math
,
probabilities
2400
x821
1866L
Lihmuf Balling
binary search
,
brute force
,
math
2400
x728
1866K
Keen Tree Calculation
binary search
,
data structures
,
dp
,
geometry
,
graphs
,
implementation
,
trees
2500
x451
1866J
Jackets and Packets
dp
2800
x292
1866I
Imagination Castle
dp
,
games
,
two pointers
2300
x772
1866H
Happy Sets
combinatorics
2100
x1669
1866G
Grouped Carriages
binary search
,
data structures
,
dp
,
flows
,
greedy
2100
x1732
1866F
Freak Joker Process
binary search
,
data structures
,
sortings
3100
x137
1866E
Elevators of Tamem
dp
2700
x419
1866D
Digital Wallet
dp
,
greedy
2300
x1336
1866C
Completely Searching for Inversions
dfs and similar
,
dp
,
graphs
1900
x3075
1866B
Battling with Numbers
combinatorics
,
math
,
number theory
1400
x7842
1864I
Future Dominators
graphs
,
greedy
3500
x89
1864H
Asterism Stream
dp
,
math
,
matrices
3200
x292
1864G
Magic Square
combinatorics
,
constructive algorithms
,
implementation
3100
x280
1864F
Exotic Queries
data structures
,
implementation
,
sortings
2300
x1450
1864E
Guess Game
bitmasks
,
data structures
,
games
,
math
,
probabilities
,
sortings
,
strings
,
trees
2100
x2677
1864D
Matrix Cascade
brute force
,
constructive algorithms
,
data structures
,
dp
,
greedy
,
math
1700
x6849
1863I
Redundant Routes
constructive algorithms
,
dp
,
trees
3500
x84
1863H
Goldberg Machine 3
dp
,
trees
3500
x90
1863G
Swaps
combinatorics
,
dp
,
graphs
,
math
2800
x650
1863F
Divide, XOR, and Conquer
bitmasks
,
dp
,
math
2600
x1159
1863E
Speedrun
brute force
,
dfs and similar
,
dp
,
graphs
,
greedy
,
math
,
sortings
,
two pointers
2100
x2798
1863D
Two-Colored Dominoes
constructive algorithms
,
greedy
1400
x9597
1862G
The Great Equalizer
binary search
,
data structures
,
math
,
sortings
2000
x2921
1862F
Magic Will Save the World
binary search
,
bitmasks
,
brute force
,
dp
1800
x6372
1862E
Kolya and Movie Theatre
constructive algorithms
,
data structures
,
greedy
1600
x10889
1861F
Four Suits
binary search
,
bitmasks
,
flows
,
greedy
3200
x206
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